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SimplifyLibcalls: Add fabs and trunc to the list of libcalls that are safe to shrink from double to float.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162173 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2012-08-18 19:27:32 +00:00
parent b9d6b8449d
commit 2b74957106
2 changed files with 27 additions and 0 deletions
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lib/Transforms/Scalar/SimplifyLibCalls.cpp
+4
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@@ -1641,6 +1641,8 @@ void SimplifyLibCalls::InitOptimizations() {
Optimizations["llvm.exp2.f64"] = &Exp2;
Optimizations["llvm.exp2.f32"] = &Exp2;
if (TLI->has(LibFunc::fabs) && TLI->has(LibFunc::fabsf))
Optimizations["fabs"] = &UnaryDoubleFP;
if (TLI->has(LibFunc::floor) && TLI->has(LibFunc::floorf))
Optimizations["floor"] = &UnaryDoubleFP;
if (TLI->has(LibFunc::ceil) && TLI->has(LibFunc::ceilf))
@@ -1651,6 +1653,8 @@ void SimplifyLibCalls::InitOptimizations() {
Optimizations["rint"] = &UnaryDoubleFP;
if (TLI->has(LibFunc::nearbyint) && TLI->has(LibFunc::nearbyintf))
Optimizations["nearbyint"] = &UnaryDoubleFP;
if (TLI->has(LibFunc::trunc) && TLI->has(LibFunc::truncf))
Optimizations["trunc"] = &UnaryDoubleFP;
// Integer Optimizations
Optimizations["ffs"] = &FFS;